Reinforcing device.



E. H. LUNKEN.

REINFORCING DEVICE,

APPLICATION FILED MAR. 26, I917.

Patented Nov. 20, 1917.

itni'nroncme nnv-io-E.

Specification of Letters-Patent.

Patented noviao; iaia.

" fskpplicatiomfiliI-Maroh 26, 1917. Serial No. 157:;322.

d n f. Ci innati. 1 the county; of lfllamiltonand'St'aterof.Qhio, haveinvented certain new andtuseful Improvements :in Beinforcing Devices,-off1w-hich 31 ;he following is a full, clear, {andexactr16$oription;,referencebeing had to-the accompanying drawings, formings part of thisspecification.

In the -constructi-on.;eof apocket windows where there a-rejtWo -rSa hBtQF li r Ht wall pocket and it is desired to slide screens into "thepocketfalso,ithere must be either a departure from standard Wallconstruc- -ti=on,:-or else I there must be. !a :narrowing of the framemembers of the Window eashes. It is of course not desirable to changestandard house construction for the purpose of accommodating a specialtype of window and it is much more practical to narrow the frame pieceof the window.

When sashes are made up out of wood, in the usual manner, it has beenfound that to narrow them down sufficiently to permit of two sashes andtwo screens to slide in the space allotted to the window frames instandard construction, will so reduce the strength of the sash framesthat they will bend and come loose at the corners.

It is the object of my invention to overcome this difiiculty, and to doit in the most inexpensive and most practical way. I intend tostrengthen the top and bottom rails of the sashes and to strengthen thecorners also and to do so with the same piece of metal as is used forthe rails.

These objects I accomplish by that certain construction and arrangementof parts to be hereinafter more specifically pointed out and claimed,and whereof further advantages will be noted below.

In the drawings,

Figure 1 is a vertical section through a window showing my inventionsecured thereto.

Fig. 2 is a detail perspective of the upper corner of a sash.

Fig. 3 is a detail perspective view of a lower corner of a lower sash.

It would immediately suggest itself that the mere countersinking orscrewing to the surface of a sash rail of a metal strip would tend tostrengthen it and it would appear that this would be sufficient to givethe desired strength, butaas a ma tter of fact this sort ofastructurewhile it 1 night bevaluable -;in providing .a eather strip for the sashrails would not have enough holding .ca-

pacityand would not engagegtherails with ;-suffic ient firmness to. givethe reinforcement which I desire.

Accordingly I have discovered that if a piece of channel iron. onothermetal iscountersunlqinthe rails w-ith thewebs of channel .walls sunk in-kerfs the rails,- that ;-then the maximum amount of holding ca- .pacityand strength will be iinparte'd to the ails. --VViththis in (view, I;provide apiece of channel iron, steel or brass 1, havingjchannelzwall-sfi; 2. The meeting rails.of the ":sash' and the upperrail of the upper sash are cut out to provide countersinks so that thechannels will lie flush with the balance of the rails, and the rails arealso kerfed to permit the channel walls to enter them, the channelsbeing laid face down.

For the corners the walls of the channels are cut away and the fiat ends8, 3, are bent down so that they will engage the outside of the tenon 4of the end rails, where the joint of the side and end rails of the sashis made to form the corner and extends down in the sash cord slot 4?beyond the tenon, so as to lie against the side rail.

Screws 5, 5, are inserted in the rails to hold the channel portions inplace, and at the extreme ends of the portions 3, there are insertedscrews 6.

It can be seen that the channel irons not only lie countersunk in therails, but that there are two depending walls or webs which engage thewood and hold the reinforcing pieces very stifl' against bendinglengthwise. The strips extending down past the tenon onto the side railsand being screwed down at the end beyond the joint tend to hold the topportions very firmly in place. They also give strength and rigidity tothe corners, since they hold the joint from opening outwardly.

The bottom rail of the lower sash may be provided with an iron ofsubstantially an S-shape. This iron has a flat portion 7 an upward bend8 and a downward bend 9. The flat portion is screwed to the rail at 10.The iron is not countersunk in the lower rail, but the upward bend issunk in the rail. The lower bend is so arranged that it will hook overthe 111 of the Window frame and form a Weather seal. This structure isnot intended for much reinforcement of the bottom rail, although itfulfils this function in part. It is intended as a weather seal andjoint, and also the ends 11 of the iron have the flanges cut away and Vare bent up so as to serve as corner relnforcements, as in the case ofthe channel iron pieces above described.

It can be seen that this device is quite simple and inexpensive and'thatit serves 'efl'ectively to give sufficient strength to a wooden sashwhich is made of much narrower wood'than the usual sash. I havefoundthat in the pocket windows of the type hitherto mentioned, thesashes reinforced as now detailed may be used to great advantage.

They present the same appearance as the usual sash and have the same oreven greater strength. My invention is also a saver in wood, as thewhite pine which is usually employed for window sashes is ex- Copiel otthispatent may be obtained for pensive and hard to getwof the bestquality.

QI-Iaving thus described my invention,

what I claim as new and desiretosecure by Letters Patent, is v 1.A.window. sash made up of narrow wooden rails. and "sides, said sideshaving forming a reinforced corner for thesash.

2. A window sash made up of narrow wooden rails and sides, saldsideshaving slots therein, and a metal reinforcement-for the sashcomprislng a channel bar countersunk into the Wood of the rail, with thechannel walls sunk into the body of'the rail,

said channel walls being cutaway at the ends, and the; channelbases-bent over and secured in the slots, thereby forming arcinforc'edcorner for the sash.

EDMUND H. LUN EN;

five cents each', by addressing the Commissioner of Patents, Washington,D. 0."

